<template>
  <div class="login-container">
    <el-form ref="loginForm" :model="loginForm" :rules="loginRules" class="login-form" auto-complete="on" label-position="left">

      <div class="left">
        <img src="@/images/left_bg.png" /> 
      </div>

      <div class="right">
        <div class="title-container">
          <div style="padding: 50px 0;">
            <img src="@/images/logo.png" width="97px" style="vertical-align: top;margin-right: 20px;" />
            <span 
              style="font-weight: bold; 
              height: 50px;
              line-height: 50px;
              font-size: 16px;"
            >城市易估综合管理平台</span>
          </div>
        </div>

        <el-form-item prop="username">
          <span class="svg-container">
            <svg-icon icon-class="user" />
          </span>
          <el-input
            ref="username"
            v-model="loginForm.username"
            placeholder="请输入用户名"
            name="username"
            type="text"
            tabindex="1"
            auto-complete="on"
          />
        </el-form-item>

        <el-form-item prop="password">
          <span class="svg-container">
            <svg-icon icon-class="password" />
          </span>
          <el-input
            :key="passwordType"
            ref="password"
            v-model="loginForm.password"
            :type="passwordType"
            placeholder="请输入密码"
            name="password"
            tabindex="2"
            auto-complete="on"
            @keyup.enter.native="handleLogin"
          />
          <span class="show-pwd" @click="showPwd">
            <svg-icon :icon-class="passwordType === 'password' ? 'eye' : 'eye-open'" />
          </span>
        </el-form-item>
        <div style="margin-bottom: 20px;" >
          <el-checkbox v-model="checked">记住账号</el-checkbox>
        </div>
        <el-button v-loading="loading" type="primary" style="width:100%;margin-bottom:30px;" @click.native.prevent="handleLogin">登录</el-button>
      </div>

    </el-form>
  </div>
</template>

<script>
import { validUsername } from '@/utils/validate'
import request from '@/utils/request'


export default {
  name: 'Login',
  data() {
    const validateUsername = (rule, value, callback) => {
      if (!validUsername(value)) {
        callback(new Error('Please enter the correct user name'))
      } else {
        callback()
      }
    }
    const validatePassword = (rule, value, callback) => {
      if (value.length < 6) {
        callback(new Error('The password can not be less than 6 digits'))
      } else {
        callback()
      }
    }
    return {
      loginForm: {
        username: '',
        password: ''
      },
      loginRules: {
        username: [{ required: true, trigger: 'blur', message: '请输入用户名' }],
        password: [{ required: true, trigger: 'blur', message: '请输入密码' }]
      },
      loading: false,
      passwordType: 'password',
      redirect: undefined,
      checked: null,
      poHtmlCode: ''
    }
  },
  watch: {
    $route: {
      handler: function(route) {
        this.redirect = route.query && route.query.redirect
      },
      immediate: true
    }
  },
  async mounted(){
    let username = localStorage.getItem('username')
    if(username){
      this.checked = true;
      this.loginForm.username = username
    }
  },
  methods: {
    showPwd() {
      if (this.passwordType === 'password') {
        this.passwordType = ''
      } else {
        this.passwordType = 'password'
      }
      this.$nextTick(() => {
        this.$refs.password.focus()
      })
    },
    handleLogin() {

      this.$refs.loginForm.validate(valid => {
        if (valid) {
          this.loading = true
          if(this.checked){
            localStorage.setItem('username', this.loginForm.username)
          }else{
            localStorage.removeItem('username')
          }
          this.$store.dispatch('user/login', this.loginForm).then(async () => {
            this.$router.push({ path: '/' })
            this.loading = false
          }).catch(() => {
            this.loading = false
          })
        } else {
          console.log('error submit!!')
          return false
        }
      })
    }
  }
}
</script>

<style lang="scss">
/* 修复input 背景不协调 和光标变色 */
/* Detail see https://github.com/PanJiaChen/vue-element-admin/pull/927 */

$bg:#ccc;
$light_gray:#000;
$cursor: #000;

@supports (-webkit-mask: none) and (not (cater-color: $cursor)) {
  .login-container .el-input input {
    color: $cursor;
  }
}

/* reset element-ui css */
.login-container {
  .el-input {
    display: inline-block;
    height: 47px;
    width: 85%;

    input {
      background: transparent;
      border: 0px;
      -webkit-appearance: none;
      border-radius: 0px;
      padding: 12px 5px 12px 15px;
      color: $light_gray;
      height: 47px;
      caret-color: $cursor;

      &:-webkit-autofill {
        box-shadow: 0 0 0px 1000px $bg inset !important;
        -webkit-text-fill-color: $cursor !important;
      }
    }
  }

  
}
</style>

<style lang="scss" scoped>
// $bg:#2d3a4b;
$bg: #fff;
$dark_gray:#000;
$light_gray:#666;

.login-container {
  min-height: 100%;
  width: 100%;
  background: url('../../images/login_bg.png') center center no-repeat;
  background-size: 100% 100%;
  background-color: $bg;
  overflow: hidden;

  .el-form-item {
    border: 1px solid rgba(255, 255, 255, 0.1);
    background: rgba(0, 0, 0, 0.05);
    border-radius: 5px;
    color: #454545;
  }

  .login-form {
    position: relative;
    width: 920px;
    max-width: 100%;
    padding: 5px;
    margin: 160px auto 0;
    overflow: hidden;
    background: #fff;
    border-radius: 24px;
    overflow: hidden;
    .left{
      display: inline-block;
      vertical-align: top;
      margin-right: 60px;
    }
    .right{
      width: 312px;
      // padding: 30px;
      // border-radius: 10px;
      display: inline-block;
    }
  }

  .tips {
    font-size: 14px;
    color: #fff;
    margin-bottom: 10px;

    span {
      &:first-of-type {
        margin-right: 16px;
      }
    }
  }

  .svg-container {
    padding: 6px 5px 6px 15px;
    color: $dark_gray;
    vertical-align: middle;
    width: 30px;
    display: inline-block;
  }

  .title-container {
    position: relative;

    .title {
      font-size: 26px;
      color: $light_gray;
      margin: 0px auto 40px auto;
      text-align: center;
      font-weight: bold;
    }
  }

  .show-pwd {
    position: absolute;
    right: 10px;
    top: 7px;
    font-size: 16px;
    color: $dark_gray;
    cursor: pointer;
    user-select: none;
  }
}
</style>
